Cylinder-reaming tool



lA. CALLEBERT. `CYLINDER REAMING TOOL. APPLICATION man FEB. 2,1921.

I NVENToR.

` ATTORNEY.

A. CALLEBERT.

CYLINDER REAMING TOOL. APPLICATION FILED FEB. 2, |921.

Allg. 29, 1922. sHEETs-sIIEET 2.

Patented INVEIvToR. fw 5MM ATTORNEY.

r'limit of the piston travel Sfr-fri i# i j aries.

nnroivsn cannnsnnr, or Monson. MICHIGAN, Assrenoit ro anx Macrrrnn Toor. oo., i on a'nonson, Mier-risen, n co'n'ronn'rroiv on rtronrssn.

CYLINDER--REAMTNG TOOL.

Specification of Letters Patent. Ptgnted Aug. 29, 1922.

Application tiled February 2, '1921. Serial Nar/41,773.

To AZZ whom t may concern:

Be it known that l, Atronsn CALLEBERT, a subject of the King of Belgium, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful lmprovements in vCylinder-Ttearning Tools, of which the following is a speciiication.

This invention relates to a cylinder reaming jig andtool. Automobile engine cylinders have to be often re-bored due to scoring and other causes. lt is the object of the present invention to provide an improved guide for the tool and also to provide an 1mprovement in the withdrawal of the reaming cutter from the cylinder, as will presently be described.

Tn the drawings,- i

Fig. l is an end elevation of the cylinder showing the tool and mounted vfor work.

Fig. Y2 is a plan view ot the same.

Fig. 3 is a vertical cross section of .the

tool and j ig.

Fig, i is a section on the line 4.--4 of Fig. Fig. 5 is Fig. 3.

Fig. 6 i Fig. 3. l

t designates the cylinder block which reaches to at about the height ci the upper and a cover or cylinder block cap is ordinarily bolted onto thebloclr. This is not shown. Thejig coinprises an upright hollow cylinder Z) which is a sectiony on' the line 5*-5 Vof a section on the line 6-6 of Aintended to act as a guide 'for the tool body o. This guide is cut away at (Z to lessen its weight. The guide is a casting which has laterally spreading feet or a trame e which permits'the same to rest on the top ot the cylinder block to which it maybe clamped by bolts 'fastened into the cap screw sockets olf the cylinder block. The purpose oi the guide Z separate from the tool body o is to permit the jig first to be properly set upon he cylinder block. The jig and the tool are arranged to re-bore cylinders ot varying diameters within given limits. lt is, therefore, absolutely necessary to properly center the jig upon the cylinder bore. This is accomplished by first putting the jig on the top of the block and then using a centering piston in the guide, that is, a piston with a tapered lower end that can be brought down into the top ot the bore to center the jig upon the bore..` The jig may then be clamped in place, the centering piston withdrawn, and the `tool body c put. into the jig inplace oit thecentering piston. y,

This tool body c is provided .with a flange y. to hold itJon the top of the guide ofthe 'A continuation of .this body 0 in the form oi a long depending sleeve g forms a `guide'for-the reaming cutter It. This reaming cutter comprises a plurality of inserted tool steel blades 7c carried in the split collar Z and .held in-place by the pins m driven in the splits in the collar. This collar screws onto the upper end of ythe outer ysleeve n. Thelower endof this outer sleeve has agplug o threaded intoit which is providedwitha square opening p. rlhe outer sleeve n will be designated the tool-carrying sleeve and the inner sleeve the guide sleeve. Ubviously these twosleeves closelytting together' and being as long as they are :form a veryfaccurate guide extending clear down into ythe cylinder itself directlyvat the point where ,the resistance is brought upon the cutter. Heretofore, as ,l am informed, it has been the practice to carry the `roaming toolon a upper end in the tool body.

The outer sleeve is, driven by means oj the arbor q. Thel load of the reaming tool `is carried on the guide sleeve g. The arbor g is a divided arbor, screwed together at 1. bor convenient to carry.

The upper arbor portion is screw-threaded ras at s for the purpose yoit rotating and having two .parts This makes the arfsha t or arbor, whichis guided only at its l advancing the reamingtool into kthe work. n

Now obviously with an ordinary nut to receive the'thre'aded portion of the arbor one ias to tediously turn the arbor'ink orderto withdraw the same from the body of the tool. This T obviate by using the split nut u in connection with the divided arbor. After the boring has been completed, the lock nut-25 is removed, as is also the nut t on the lower end of the arbor, and thereupon the in against the tvvo portions of the split nut,

driving the tapered split nut into the tapered cavity to bring the two parts tiglyitl f together and the threads of the split nuttightly upon the threads of the arbor.v ln other Words, the tapered arrangement ot the cavity and nut forms a very nice guide for the loose parts as they are dropped in place, and the lock nut Z in connection with this tapered arrangement serves to drive all the parts into suitable relationship. As Will be apparent from Fig. 4, the split nut is provided at one side with a space or key-Way 'w which permits the pin x to prevent the nut from turning.

I have found it convenient to provide slotted ears y on the llange ,t on the body of the tool, into Which may be swung the hinged screws@ that are hinged to the jig. rlhis permits these screws to be swung up into the slots of the ears and the Wing-nuts l turned down to clamp the body of the tool onto the jiO0 lWhat I claim is:

l. In a tool for the purpose combination of a body, a hollow. guide sleeve depending from the body, a cutter-carrying sleeve rotating on said guide sleeve, a cutter carried on the sleeve, and means for driving the cutter-carrying sleeve, said means eX- tending through the hollow sleeve and engaging the end of the cutter-carrying sleeve remote :from the said body.

2. ln a tool itor the purpose speciiied, the combination of a body, a sleeve depending fromV the body, a driving arbor Within the specified, the

sleeve, and a cutter supported and guided on the outside of the sleeve, the said arbor extending through said sleeve and out the end or' the sleeve remote from the body and connected at such end With the cutter.

3. ln a tool for the purpose specified, the combination of a body, a guide sleeve depending therefrom, a cutter carrying sleeve guided in rotation and in axial movement on the sleeve, a cutter thereon and an arbor for rotating and advancing the cutter, the said arbor secured Within the said guide sleeve and connected With the cutter-carrying` sleeve at the end remote from the body.

e. In a tool tor the purpose specified, the

Y :trom t combination of a body, a sleeve depending ie body, a cutter-carrying sleeve supported slidably and rotatably on the outside of the guide sleeve, a cutter carried on said cutter-carrying sleeve, and an arbor carried Within the guide sleeve and serving to rotate and advance the said cutter and having a detachable but driving connection with said cutter-carrying sleeve.

5. ln a tool for the purpose specified, the combination of a body, a guide sleeve depending from the body, va vcutter-carrying sleeve rotatable and slidable on the outside ot the guide sleeve and provided in its end with a plug having a polygonal opening, a cutter carried on said cutter-carrying sleeve, and an arbor rotatable in the guide sleeve and serving to rotate the cutter-carrying sleeve and also advance the cutter, said arbor being provided with a polygonal end that may be fitted in the polygonal opening in the said plug.

6. In a tool for the purpose specified, the

combination ot a body provided With a cutter guide, a cutter, an arbor having a threaded portion and arranged to drive the cutter in rotation and advance the saine, a split nut "for advancing the arbor by engaging the threads thereof, and means tor detachably securing the split nut .vithin the body to permit the arbor to be Withdrawn from the body Without turning.

7. in a tool for the purpose specified, the combination ot a body, a guide sleeve depending therefrom, a cutter-carrying sleeve slidable and rotatable on the outside of the guide sleeve, an arbor having an upper threaded portion and al lower portion provided with an end adapted to lit into driving relation with the cutter-carrying sleeve but removable therefrom, and a split nut detacbably fitting into the said body of the tool by which the arbor is guided in advancing the cutter upon the Work but Which may be released from the body to permit the separation ot the arbor Yfrom the cutter carrying sleeve and the Withdrawal 'of the arbor by longitudinal movement.

lin testimony WhereoiE l allix my signature.

ALFONSE CALLEBERT. 

